Feed-water heater and purifier for boilers.



Patented Aug 20, 1918.

I I I E IIHIHII WITNESSES: I M

, INVENTOR Z2, fizzy/ AW MM k E 14TH? N E Yd WILLIAM JI EVERETT, 0F IHD IA'NAPOLIS, INDIANA.

FEED-WATER HEATER AND runrrmnron BOILERS.

Specification of Letters Patent. Patented A 20 1918 Application filed December 3, 1915. Serial 110. 64,837.

To all whom it may concern:

Be it known that I, WILLIAM J. EVERETL, a citizen of the United States, residing at Imlianapolis, in the county of Marion and State of Indiana, have invented a new and useful Feed-Water Heater and Purifier for Boilers, of which the following is a specification.

The object of my invention is to produce a sin'iple, yet exceedingly eflicient, device for automatically purifying the feed water for boilers by means of which impurities precipitable by rapid heating of the feed water may be removed.

The accompanying drawing shows my device in vertical section'as attached to an ordinary steam boiler.

In the drawing, 10 indicates a boiler from which leads a pipe 11, said pipe being pror\ll.l9(1 with a valve 12 and delivering into the side of a fitting 13. Leading downwardly from fitting 13 is a pipel i which should be considerably larger than pipe 11. Fitting '13 is provided with a downwardly projecting nozzle 15 which is preferably arranged centrally of pipe 14 and projects down beyond pipe 11. Leading into nozzle 15 is a feed water sup y pipe 16 provided w. 3b. a suitable valve 1 Pipe 14 leads into a head 18 of a settling drum 19 which, at its lower end, is provided with a head 20 from which leads a sludge pipe 21, provided with a suitable val ve 22. Drum 19 may be conveniently formed of a short section of standard pipe oi considerably larger diameter than pipe 1! and leading from the upper end of the drum, conveniently from the side of head 18, is a pipe 23 which leads into the lower part of boiler 1.0 and is provided with a suitable valve 24. The mouth of pipe 23 is from pipe 14 by a guard 25 which preferably extends. below the level of pipe 23.

The nozzle 15 is a spraying nozzle, so that it prmluces streams smaller than pipe 14: and, in order that pipes 23 and 11 be straight, it is desirable that the drum 19 be arranged below the level of the boiler.

In operation, the hot water from the boiler flows through pipe 11 into fitting 13, where it surrounds nozzle 15 and quite suddenly heats the, incoming feed water so to preeipitatc the impurities.

water reaches the drum 19, the precipitate settles to the bottom, the outflow being at considerably reduced velocity, owmgto the uarded When the treated size of pipe 23, and the pure water flows through pipe 23 into the boiler.

I have found, in the practical use of this device, that ordinary hard waters, such, for instance, as those furnished by wells and strean'is in the vicinity of Indianapolis, In diana, yield quite readily to treatment in the apparatus which I have described, and that practically all boiler-injuring im urities are removed. The drum 19 may e of any desired capacity, but most conveniently it may be of such size that the sludge should be removed once or twice a day by opening valve 22.

I claim as my invention:

1. In a feed water purifier, the combination with. a boiler, of a relatively long and substantially vertical mixing tube, a supply pipe arranged below the Water level in the boiler and connecting said boiler and the upper end of the mixing tube, a feed-water nozzle leading into the upper end of said mixing tube and deliveringbelow the mouth of the supply pipe, the mixing tube being materially larger than the nozzle, 'a drum into which the lower end of the mixing tube opens directly downward, said drum being materially larger than, the Inixin tube, a sludge discharge at the lower on of said drum, said drum being free from obstructions below the open tube and said sludge discharge so that any sediment may settle from, the mixing tube through the drum into said sludge discharge without interference, and a pipe'connecting the upper portion of said' drum with the boilerat a pointbelowthe supply pipe.

2. As an articl of manufacture, a feed Water heater and purifier comprising a settling drum having a sludge discharge, an outlet leading from the upper end of said lower end of said mixing drum, a'bottoinless mixing tube opening at i ten supply inlet at the upper end of said mixing tube, and'fla feed-water nozzle lead-' ing into the upper end of said mixing tube below the. water supply inlet, said nozzle 0 en lower end of through the drum into said. sludge discharge withoutiiiterference, a. wa

being of mal'erially'less diameter than the mixin tube and supply inlet.

3. an article of manufacture, a feed water heater and purifier comprising a settling drum having a sludge discharge, an outlet leading from the upper end of said drum, a bottomless mixing tube opening at the bottom directly into the upper end of said drum, said mixing tube being relatively long and of materially less diameter than the drum, and said drum being free from obstructions below the o pen lower end of said mixing tube and said sludge discharge so that any sediment may settle from the mixing tube through the clrunninto said sludge dis- 15 charge without interference, a Water supply inlet at the upper end of said mixing tube, and a haul-water nozzle leading into the upper end of said mixing tube below the Water supply inlet, said nozzle being a spraying I WILLIAM J.- EVERETT. 

